How so? Most of the hardcore encryption stuff was built at Facebook under the founder's supervision afaik for the purposes of making it harder for Zuck to inevitably ruin the privacy aspects.

I personally don't use it, because it _is_ loaded with engagement bait but its not all worse and is better in some ways.

Not yet they haven't. They've basically left it alone, with very minor UI/UX improvements.

They have very recently shown signs of making it worse (the AI button), but overall I've been surprised how careful they've been about doing it slowly. We've probably got another 5-10 years of it being great before they turn it to shit.